NavList:

There's a copy of "Peirce's Trigonometry" listed through abebooks right now:
http://www.abebooks.com/servlet/BookDetailsPL?bi=5618514353
Seems like a reasonable price.

Benjamin Peirce was a student and friend of Nathaniel Bowditch and much of this book is devoted to explaining the methods in the New American Practical Navigator. This was first published in 1840 a few years after Bowditch died. The more complete title, by the way, is "An elementary treatise on plane & spherical trigonometry, with their applications to navigation, surveying, heights & distances, and spherical astronomy, and particularly adapted to explaining the construction of Bowditch's navigator, and the nautical almanac"

The above is strictly for the collector and/or the person who believes that books are made of paper :). You can also read it online through Google Books here:
http://books.google.com/books?id=cz87AQAAIAAJ

Incidentally, I notice that they have created tablet and smartphone apps for Google Books now. The standard web implementation doesn't necessarily work right on those touchscreen based devices. Haven't tried any of the "apps" out yet, but it should be an improvement. You can follow this link to see the various options for this specific book:
http://books.google.com/books?id=cz87AQAAIAAJ&output=acs_help

-FER

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